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TBA 0R COFFEE POT. 1 No. 309,725. Patented Dec.- 23, 1884.

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JOHN G. MILLIGAN, OF BROOKLYN, ASSIGNO R TO THE LALANOE & GROS- JEAN MANUFACTURING COMPANY, OF NEYV YORK, N. Y.

' TEA OR COFFEE POT.

CSPl-ECIFEGATION forming part of Letters Patent No, 309,725, dated December 23, 1884.

Application filed April 12, 1884. (No model.)

To aZZ whom it may concern:

Be it known that I, JOHN G. MILLIGAN, a citizen of the United States, residing in Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Tea and Coffee Pots, of which the following is a specification.

My invention relates to the joints and attachments of the body, spout. and strainer of IO tea and coffee pots, and other like vessels which are intended to be finished by a covering of enamel glaze, and in which the above named parts are secured together by means of flanged fastening collars, the flanges of I 5 which serve to clamp the base of the spout, the edge of the strainer, and the edge of the opening in the wall of the vessel where the spout is attached. A joint embodying these features is exhibited in Letters Patent of the United States No. 260,995, granted Emile Krippendorff' July 11, 1882.

The object of my present invention is to provide a joint which shall be stronger, more durable, and less liable to leakage than the 2 5 joints heretofore made. I effect this object by combining with the double flanged collar (shown in the above-named Letters Patent) a second flanged i'asteningc-ollar of such a shape and so arranged with reference to the other 3 parts that a double thickness of metal is obtained in all parts of the joint, and the several flanges are so interlocked with each other as to give the utmost possible strength to the same. In the manufacture of this class of vessels the most difficult problem has been to provide ajoint that will not leak, for a leak practically ruins the article, as there is no way of mending it. The flanged fasteningcollar has proved to be the best means here tofore devised for effecting the desired result, and by its use a neat, efficient, and generally tight joint has been secured, whereby the class of vessels under consideration have been brought into far more general use than before. I11 manufacturing the articles, however, a certain portion or percentage of them have been found imperfect and are returned to the manufacturer. The principal cause lies in the want of perfect ductility of the metal used for the collars. In turning over and strongly com pressing the flanges the metal sometimes breaks at the fold, and although the eye cannot detect it, yet after the article is finished, and it has been used a short time the liquids heated within the vessel find their way through 5 5 the joint. The enamel may prevent the leak from manifesting itself for awhile; but if the soundness of the metal at the fold of either flange of the collar is not entire throughout its length the heated liquid will soon work through, and a leak once formed grows constantl y larger. To remedy this state of things my invention has been made. It is illustrated in the accompanying drawings, in Which- Figure 1 is a View in section of the im- 6 proved joint, with astrainer held between the folds or flanges outside of the vessel. Figs.

2 and 3 are views of the same joint, with the strainer inside the walls of the vessel, and forming a part of one of the flanged collars.

Referring to Fig. 1, A represents a portion of the side of the vessel, B the spout, O the double-flanged outside collar, D the inner collar, and S the strainer. The body A of the vessel has the flange a turned outward about 7 5 the edge of the aperture made for the spout. The spout B has the flangeb formed about its base.

In assembling the parts the flange c of the collar 0 is first interlocked with the flange a upon the vessel. These are compressed by suitable machinery, and after that the second collar, D, is put in place. The strainer S, if a strainer is required in the vessel, is next inserted, and also the base of the spout B. The 8 5 collars and the spout then have the appearance shown in Fig. 2. Finally, the whole joint is firmly pressed together, which gives it the finished appearance shown in Fig. 1.

An inspection of the figure will show that by the positions and interlocking of the several flanges the joint is made double through out, and the advantages arising from this form will readily suggest themselves. If in the first operation of turning the flange a over upon 5 the flange c a break should take place at the fold around the edge of the opening, and which might, if left alone, cause a leak, as already described, then the flange d on the collar D, by being turned over,and thereby entirely cover- ICO ing the fold which was first formed around the opening, will prevent any injurious effects from such break, for the liability of there being any break in the fold of the flange d is practically nothing, because it is not so sharply turned as the fold a. The reason is it is folded over three thicknesses of metal-namely, the flange and the two parts of the fold on the body of the vessel. Again, with reference to the outside folding. lVhile under the old form (shown in Krippendorffls patent, before cited) there was a possibility of breaking the metal of the double flanged collar where it was sharply compressed over the flange on the body and the flange on the spout, under this form there are four thicknesses of metal inclosed within the collar 0, and this makes so even a curve that the chance of its breaking under compression is practically nothing. The

great strength also of the joint is manifest.

- on the spout or upon the body of the vessel near the joint, might result in cracking the metal of the collar or of the body of the vessel whichinterlocks with the collar; but by this invention the strength of the joint is much more than doubled, and such breakage is scarcely possible. The double hold of the spout upon the body of the vessel, caused by turning back the flange d of the inner collar, is of the greatest value and importance.

Referring now to Fig. 2, the joint shown is the same as in Fig. 1, so far as the position and folding of the flanges are concerned; but in this case the strainer, instead of being a separate piece, forms a part of the second or inner flanged collar. This collar therefore becomes a flanged perforated plate, but performs precisely the 'same office as the collar D in Fig. 1. j

The partsin Fig. 2 are assembled, as shown, in the same manner as the parts in Fig. 1, and like letters refer to like parts in all the figures.

The final process of compression, in the case of the combination shown in Fig. 2, produces the result shown in Fig. 3. The flange (6 is pressed against the inside of the vessel and the strainer is brought up close to the same, forming thel'old (7/ in Fig. 3. This form combincs every advantage required in a joint of this kind, and the flanged plate D, being intcgral with the strainer S,- gives at least equal strength in the joint to that possessed by the form shown in Fig. 1.

It is believed that this invention provides a joint that will last aslong as the vessel itself.

I claim as my invention 1. The combination, with the body and spent of a tea or coffee pot or other like vessel, of two separate flanged fastening-collars, one of which is outside the walls of said vessel, and the other is partly without and partly within the said walls.

2. The combination, with the body and spout of a tea or coffee pot or other like vessel, of two separate flanged fastening-collars, one of which is without the walls of said vessel, and the other extends partly without and partly within the walls of said vessel, and a separate strainer held ilrits place outside the walls of said vessel by said collars.

3. The combination, substantially as hereinbefore set forth, with the body and spout of a tea or coffee pot or other like vessel, of the fastening-collar, O, encircling the base of the spout and interlocking with the flange a, turned outward from the walls of the vessel, and an inner separate fastening-collar whose flanges extend inwardly and outwardly from the walls of said vessel.

4. The combination, substantially as hereinbefore set forth, with the body and spout of a tea or coffee pot or other like vessel, of the outward -flanged fasteningcollar encircling the base of the spent and interlocking with a flange turned outward from the body of the vessel, and an inner separate flanged collar having one flange extending outward from the body of the vessel and interlocking with the base of the spout and the first-mentioned collar, and having its other flange extending within the walls of said vessel, and a strainer made integral with the said inner collar.

5. The combination, substantially as hereinbeforeset forth, with the bodyA and the spent :3 of a tea or coffee pot or other like vessel, of the outside collar, 0, the inside collar, 1), and the strainer S, held outside the vessel between the base of the spout and the fold of the inner collar, II).

(3. The combination, substantially as hereinbefore set forth, with the body A and spent B of a tea or eoifee pot or other like vessel, of the outer collar, 0, and the inner collar, D, having the strainer S integral therewith. v

In testimony whereof I have hereunto subscribed my name this 11th day of April, A. I). 1884.

JOHN C. MIL'LIGAN.

\Vitnesses:

JAMES COOHRAN, FRED W. J. BROOKS. 

